module led_run(
	Clk,
	Reset_n,
	Led
);

	input Clk;
	input Reset_n;
	output reg [3:0] Led;
	
	reg [24:0] counter;
	
	always@(posedge Clk or negedge Reset_n)
		if(!Reset_n) begin
			counter <= 0;
			Led <= 4'b0001;
			end
		else if(counter == 25_000_000 - 1) begin
			counter <= 0;
				Led <= {Led[2:0],Led[3]};
			end
		else
			counter <= counter + 1'd1;
			 
	
endmodule
